Surgical appliance.



E. B. CHAPMAN.

SURGICAL APPLIANCE.

APPLICATION FILED OCT. 10 I912- lfinmgfiu Patented Sept. 11; 1917,.

WITN ESSES i TE lVEBETT BROWN CHAPMAN, OF PHILADELPHIA, PENNSYLVANIA.

SURGICAL APPLIANCE.

Specification of Letters Patent.

Patented Sept. 11, 191?.

Application filed October 10, 1912. Serial No. 725,039.

To all whom it may concern:

Be it known that I, EVERETT BROWN CHAP- MAN, of Philadelphia, in theState of Pennsylvania, have invented a certain new and usefulImprovement in Surgical Appliances, whereof the following is aspecification, reference being had to the accompanying drawings.

My invention relates to an appliance for hypodermically injectingpellets, and may be employed with particular advantage in the treatmentof cattle for what is known as black leg. The claims in this applicationare limited to the construction and arrangeinent of what may be termed amagazine cartridge adapted to contain and normally retain a plurality ofmedicinal pellets. The form of my invention herein shown and described,is particularly designed for cotiperation with the injector means suchas claimed in another application copending herewith and including areciprocatory plunger in concentric relation with a tubular hypodermicneedle and adapted to thrust a pellet through said needle from saidcartridge; the latter including a plane disk adapted to be rotated inconnection with the injector, and having a circular series of sockets,being openings extending through said disk parallel with its axis, saidcartridge carrying upon its opposite plane faces covers for the oppositeends of said sockets, preferably paper or similar frangible material.Such material is preferably transparent or translucent so as to enablethe operator to ascertain, visually, whether said sockets containpellets or not. However, suitable covers for said sockets may be made ofopaque material which is perforated concentrically with said sockets todisclose the pellets without normally permitting the escape thereof, or,imperforate opaque covering material may be employed, so arranged as topermit the op- I erator to ascertain, tactually, Whether said socketscontain pellets or not.

My invention includes the various novel features of construction andarrangement hereinafter more definitely specified.

In the drawings :Figure I is a plan view of a cartridge convenientlyembodying my invention.

Fig. II is a transverse sectional view of said cartridge showing thecooperative rela tion of said plunger with respect thereto.

Fig. III is a p i ll View of a modified form of my invention,

Fig. IV is a transverse sectional view of the cartridge shown in Fig.III.

Fig. V is an edge view of the cartridge shown in Figs. III and IV.

Referring to the form of my invention shown in Figs. I and II; thecartridge 1 includes the plane disk 2 having a circular series ofsockets 3 opening therethrough parallel with the axis of said disk. Saidcartridge carries, upon its opposite plane faces, covers for theopposite ends of said sockets, preferably sheets of paper or similarfrangible fabric i and 5. Such material is preferably transparent ortranslucent to such a degree as to enable the operator to ascertain,visually, whether said sockets contain pellets 7 or not.

Said cartridge 1 primarily contains a pellet 7 in each of its sockets 3,and is con veniently provided with the central opening 8 for connectionwith a device for automatically filling said sockets 3 with saidpellets. Said cartridge is also provided with three openings 9 extendingthrough the cartridge parallel with its axis to receive a rotary carrierby which said cartridgemay be turned to successively present saidsockets 3 in alinement with the plunger 11 by which the pellets 7 may besuccessively projected therefrom as indicated in Fig. II. It may beobserved that said openings 9 are in unsymmetrical relation so as toinsure that the cartridge may only be engaged in predetermined relationwith the carrier. Such an arrangement is desirable in order that saidsockets may be successively presented in the order indicated by thenumerals respectively designating said sockets as indicated in Figs. Iand V.

In. the form of my invention shown in Figs. III, IV and V the cartridge12 includes the plane disk 13 having a circular series of sockets 14opening therethrough parallel with the axis of said disk. Said cartridgecarries upon its opposite plane faces, covers for the opposite ends ofsaid sockets, being sheets of frangible fabric 16 andl'? which may beopaque, said sheet 16 being provided with perforations 18 registeringwith each of said sockets, through which the interior of the socket maybe inspected to ascertain whether it is empty or not.

Said cartridge 12 primarily contains a pellet 20 in each of its sockets14, and is conveniently provided with three openings extending throughthe cartridge parallel with its axis to receive a rotary carrier bywhich said cartridge may be turned to suecessively present said sockets14 in alinement with a plunger by which the pellets 20 may besuccessively projected therefrom as above described.

Moreover, said cartridge 12 is provided with an unsymmetrical axialopening 23 to engage the mechanism with which it. cooperates; saidopening being unsymmetrical to insure that the cartridge may only beengaged in predetermined relation with such mechanism.

The cartridges herein described are adapted to cooperate with themechanism forming the subject matter of my copending applicationaforesaid including a rotary cartridge carrier having means to engageand rotate .them step by step to successively present the socketstherein in registry with the plunger by which pellets are projected fromthe sockets, and, the index numbers herein shown individuallydesignating the respective sockets are so arranged and presented as toindicate to the operator the number of pellets remaining in thecartridge. For instance, the cartridge 1 primarily contains twenty-fivepellets, and, when initially connected with the mechanism for rotatingit, the number 25 is manifested to indicate that 25 pellets are in thecartridge. Pellet No. 25 is the first one projected and upon suchprojection the number 24: is manifested to indicate that 24 pelletsremain in the cartridge and so on until the pellets are all dischargedfrom the cartridge when the latter is removed and replaced by anotherfully charged. It is to be understood that the metal disk members of thecartridges above described may be repeatedly used;

the "frangible covers or other means for hold- I ing the pellets in thesockets being replaced as required.

It may be observed that the provision of means to enable the operator toascertain whether each socket in the cartridge contains a pellet or notis important because the operation. of charging the cartridges withpellets requires such care that it is likely that a pellet may beoccasionally omitted from a cartridge, and, if so, the hypodermic needlemight be inserted and the mechanism operated to thrust the plunger 11through the empty socket without the operator being aware that theoperation had failed to inject a pellet as intended. However, I find itunnecessary to provide means for the operator to visually ascertainwhether the sockets are empty or not, as the fact may be ascertainedtactually if the Copies of this patent may be obtainedfor fabricemployed to cover the sockets is flexible enough to permit the operatorto feel by finger pressure whether the pellets are contained in thecartridge or not.

Therefore, I do not desire to limit myself to the precise details ofconstruction and arrangement herein set forth as it is obvious thatvarious modifications may be made therein without departing from theessential features of my invention as defined in the appended claims;

1. In a device of the character described a plane-disk, having meanswhereby it may be rotatably engaged, and a circular series of sockets,being openings-extending through said disk parallel with its axis;frangible covers for the opposite ends of said sockets, so arranged thatthe operator may ascertain whether said sockets are empty or not,including sheets of translucent fabric attached to the opposite faces ofsaid disk; and, pellets in said sockets between said covers.

2. In a device of the character described a plane disk, having meanswhereby it may be 'rotata bly engaged, and a circular series ofsockets,being openings extending through said disk parallel withitsaxis; and, frangible covers for the opposite ends of said sockets, soarrangedthat the operator may ascertain whether said sockets are emptyor not, including sheets of translucent fabric attached to the oppositefaces of said disk.

3. In a device of the character described a plane disk, having meanswhereby it may 'be rotatably engaged, and a circular series of sockets,being openings extending through said disk ,parallel with its axis; and,frangible covers for the opposite ends of said sockets, so constructedandarranged that the operator may ascertain whether saidisockets areempty or not, including sheets of fabric attached to the opposite facesof said disk.

4. -In a device of'the character described, a plane disk, having meanswhereby it may be rotatably engaged and a circular series of jsocketsfbeing openings extending through said disk parallel with itsaxis; and, frangible covers for the opposite ends of said sockets, soconstructed and arranged that the operator may ascertain whether saidsockets are empty or not. y

In testimony whereof, I have hereunto signed my name at Philadelphia,Pennsyl- Vania, this nineteenth day of September, 1912. i

v EVERETT BROWN CHAPMAN.

IVitnesses ARTHUR E. PAIGE, IVILLIAM A. RANDALL.

five cents each, byaddres'sing the "Commissioner otPatents, Washington,D. C."

